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Re: [TCML] Energy accumulation on TC.



Gerardo Lezcano wrote:
Have someone on The List, experimented with capacitive discharges from primary to secondary, at such a high rate, and in tight synchronization, so sucessive bangs occur in phase, promoting reactive power increase over time, indefinitely, until spark breaks out, no matter how big and smooth topload is?
Why is this not possible? Mechanical systems exhibit this phenomena (Tacoma Bridge).
If you build a "solid state" Tesla coil and drive it at one of its resonance frequencies, you get this. But in no system the energy accumulates indefinitely, because there are always losses that limit the maximum amplification of the excitation that can occur. This limit is associated to the "quality factor" Q of the system at that resonance frequency. It's a common misconception to believe that unlimited energy accumulation is possible due to resonance. This would happen only in a perfectly lossless system. It's true, however that mechanical systems can quite easily be built with quality factors high enough to cause destruction of the system with excitations that would look harmless, as the case of that bridge, or the case of a singer that breaks a glass. A Tesla coil can have resonances with Qs in the thousands, and so an excitation with hundreds of Volts can produce a terminal voltage in the 100 kV - 1 MV range. More is very difficult to achieve.

Antonio Carlos M. de Queiroz

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